Category Archives: landscape

Plant Phenology Indicators make Monitoring A LOT easier

Posted on October 15, 2015 by Jen Llewellyn

 Growers and landscapers use Growing Degree Day models to help predict when various developmental stages of pests will be present, based on temperature data they have collected themselves or obtained from the local weather office. These GDD pest models can … Continue reading →

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Fall Fertility – What a great opportunity!

Posted on October 6, 2015 by Jen Llewellyn

Leaf drop and fall colour is visible on some trees and shrubs in the landscape. This is especially true of woody plants on roadsides, high sandy knolls or compacted sites. In some cases where individual specimens are entering senescence earlier … Continue reading →

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Is Your Spruce Tree Dropping Twigs?

Posted on October 31, 2014 by Jen Llewellyn

This time of year arborists and landscapers often get calls from homeowners worried about all the twigs they find scattered on the ground below their spruce twigs. It’s just the current season’s growth that is affected and although it’s been … Continue reading →

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Mid-Fall is a great time for IPM in the Landscape

Posted on October 17, 2014 by Jen Llewellyn

The rainy, cool conditions that characterized the 2014 growing season have left their mark on several trees and shrubs. There is an unprecedented amount of foliar diseases in the landscape, some of which we don’t commonly see from year to … Continue reading →

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Keep Trees and Shrubs Healthy With Fall Fertilizing

Posted on October 2, 2014 by Jen Llewellyn

Leaf drop and fall colour is visible on trees and shrubs in the landscape. This is especially true of woody plants on roadsides, high sandy knolls or compacted sites. In some cases where individual specimens are entering senescence earlier than … Continue reading →

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Some late season pests (September 17, 2014)

Posted on September 17, 2014 by Jen Llewellyn

There are a few odds and sods kicking around this time of year. Usually late season feeding injury is not a big deal.  However when the pest is going to make your ornamental plants its “forever” home…..you might want to … Continue reading →

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Winter Injury Still Rearing It’s Ugly Head

Posted on July 9, 2014 by Jen Llewellyn

  Believe it or not (and maybe you don’t believe it), but many horticulturalists believe that the recent dieback on trees and shrubs in the landscape and nursery can be at least partially explained by winter injury. By winter injury … Continue reading →

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June 13: OMAF Nursery & Landscape Report

Posted on June 14, 2014 by Jen Llewellyn

Environment Canada is calling for much cooler, sunny weekend with  temperatures ranging from 19-21oC in many areas.  What perfect weather for weeding and rehabilitating old garden beds and planting more trees, shrubs and perennials! The cool, weather we experienced this … Continue reading →

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Funky Dissected Leaves on Weeping Eur Beech?

Posted on June 13, 2014 by Jen Llewellyn

I have had a lot of questions about strange shapes of leaves on weeping European beech (Fagus sylvatica ‘Pendula’) this week from landscapers, arborists, garden centres and field production nursery growers. What we are seeing is slight chlorosis (yellowing) and … Continue reading →

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June 12/14: Yellow headed spruce sawfly is OUT

Posted on June 12, 2014 by Jen Llewellyn

Look for tiny larvae of  Yellow-headed spruce sawfly feeding on tender new needles of spruce (e.g. Colorado spruce) in the landscape.  Plant phenology indicator:  Robinia pseudoacacia (black locust) in full bloom.  Larvae are green with lighter longitudinal stripes, yellow-brown heads.  … Continue reading →

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